#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stddef.h>

struct Node
{
  struct Node* next;
};

struct Person
{
  char name[1024];
  struct Node link;
};

struct Node* head = NULL;
struct Node* iter = NULL;
struct Person* tmp = NULL;

void add_person(const char* nm)
{
  tmp = malloc(sizeof(struct Person));
  strcpy(tmp->name, nm);
  iter->next = &tmp->link;
  iter = iter->next;
}

int main(int argc, char** argv)
{
  tmp = malloc(sizeof(struct Person));
  strcpy(tmp->name, "Adam");
  head = &tmp->link;
  iter = head;

  add_person("Ben"); 
  add_person("Charlie"); 
  add_person("Dan"); 
  add_person("Erik"); 

  iter->next = NULL;

  iter = head;
  while (iter)
  {
    // find the address of the object that the link is part of
    unsigned int link = (unsigned int)iter;
    size_t offset = offsetof(struct Person, link);
    struct Person* p = (struct Person*)(link - offset);

    fprintf(stdout, "%s\n", p->name);
    iter = iter->next;
    free (p);
  }

  return 0;
}